Graphs Definition and 655 Threads

  1. N

    LaTeX Cayley Graphs in LaTeX: Tips and Tricks for Creating Dynamic Visualizations

    Hello, What is best suited for making cayley graphs in LaTeX? Thank you.
  2. F

    MATLAB Merging Two Graphs into One in Matlab

    Hello Well since I'm a beginner in Matlab i have a question aboute ploting the graph. How can I merge two graphs into one ? Since i have function test(x,h) and function test2(x,h) both of them plotts in a two separate graphs. How do i do if i want to see both of them in a single graph ...
  3. S

    Sketch the graphs of solutions of diff. eqs

    Hi people! This is my first topic here so excuse me if I am doing smth wrong) So basically I am having problems with understanding of how to sketch the graphs of solutions of diff. eqs in terms of y and t... Here is the description and 2 problems: Problems 8 through 13 involve equations...
  4. R

    Finding Speed, Velocity, Displacement, etc. from velocity-time graphs?

    Lets say I had these two graphs: How would I find distance traveled, displacement, speed and velocity from these graphs? I would appreciate it if you could show your work. Thanks in advance.
  5. R

    Difference between Average Speed & Average Velocity in Velocity-Time graphs?

    I just want to know what is the difference on how to find Average velocity and Average speed when I try to find it in Velocity-Time graphs Also how do you find distance traveled and displacement in these velocity-time graphs. Thanks in advance for your help. Please use fairly simple...
  6. A

    MATLAB Plotting Multiple Graphs in MATLAB

    Dear Fellows, I need to plot a graph in matlab, and stuck in obtaining multi plot from it for different constant values... following example will explain my situation. x=1; y=3; c=x^2+4y+9z z=linspace(0,1.2); plot(z,c,'r') in this I want to plot for y=3,y=4,y=5 and y=0 all curves in...
  7. B

    What Do Vertical Lines in Signal Graphs Represent?

    So I am 2nd year now and we started this new course Theory of Signals. Already I bumped into a wall when it came to understand basic stuff. Here is what I mean [PLAIN]http://pokit.org/get/0864633c869b647116b980428a07d4f1.jpg Here we have 4 functions, each representing one type of...
  8. M

    3-regular (cubic) graphs with a bridge

    How can you prove that a cubic graph with a bridge cannot be 3-edge colored? I guess one could try a proof by contradiction, so we assume a 3 edge coloring is possible for such a graph. But then I am not sure in which direction to continue. I have tried to draw such graphs, and clearly...
  9. O

    How to Find the Area Between Two Graphs: A Trigonometric Approach

    Homework Statement Find the area of the region enclosed between y=4sin(x) and y=2cos(x) from x=0 to x=0.8pi. Homework Equations \int^{0.8\pi}_0 dx g(x) = 4\sin(x) f(x) = 2\cos(x) The Attempt at a Solution This problem needs to be split up into two parts...
  10. A

    Where Did Bill Go Wrong? Tips for Correctly Drawing Velocity vs. Time Graphs

    i am trying to do my physics lab tutorial homework and i am confused about a question that asks.. bill got his distance and acceleration graph right but drew the incorrect velocity vs. time graph shown here. velocity | | / | |\ | / | | \ |_ /__|______...
  11. M

    Are my graphs and answers correct for position, velocity, and acceleration?

    I posted a picture that translates the bottom information into a graph I wanted to know if my answers below are correct and my graphs are correct... Thank you. First Graph:Position second Graph : Velocity third graph: Accelertaion Position...
  12. N

    How do you draw v-t, a-t and d-t graphs

    I was wondering if someone can explain to me in detail on how to accurately draw a velocity-time graph and an a-t graph when the d-t graph is given.
  13. M

    Determining the function using graphs

    Homework Statement Shown in picture Attachment Question #2. Homework Equations Not sure..That's what I'm supposed to figure out. The Attempt at a Solution Well I've graphed the points..That's about it hah. Seems like a Log graph flipped on the x-axis.
  14. P

    What are the solutions for the intersection of y=abs(x) and y=(x^2)-6?

    Homework Statement The graphs y=abs(x) and y=(x^2)-6 intersect at x=3 and x= -3 What is confusing me is when I set them equal to each other and solve (x^2)-x-6=0 and (x^2)+x-6=0 I get -3,+3,-2,+2 What is the deal with the negative 2 and pos 2? Homework Equations The...
  15. S

    Cubic graphs to equation confusion

    Hi, I have a sensor going into a microcontroller via a adc. I have worked out the conversion from the adc value into real terms. Now the math takes too long in code to run this. and a look up table with 1024 elements will fill my program memory very quickly. So I have put the results...
  16. A

    Mathematica Mathematica not supporting graphs code is as

    mathematica not supporting graphs,,,code is as Dear Fellow I was trying to make graph using mathematica but because of imaginary appearing mathematica is not supporting don't now how to evaluate the graph,,where code for mathematica is as rho = 1.74*10^(3); lambda = 9.4*10^(11); mue =...
  17. F

    Thermodynamics: P,V,T graphs and other misc. questions.

    Hey! You seem to kn ow what youre talking about here and I am stuck on a similar question, so is it ok if i ask you something? Basically I found your tips on things that you need to include when solving the question really helpful, and I was wondering, should you sketch graphs of specific volume...
  18. X

    Variation statement into graphs- Right?

    My first post, yay i already like the atmosphere here :P anyway... Using the formula F = kQq/R2 sketch graphs between a. F and Q (k,q, and R are constant) b. F and R (Q,q and k are constant) c. Q and R (k,q and F are constant) I think i did it correctly but I'm not quite sure...
  19. Saitama

    Solving 10sin(x)=x: Find # Solutions w/ Graphs & Math Software

    Confused in graphs? Homework Statement My teacher gave a question in which he have to find the number of solutions:- 10sin(x)=x I solved it using the graphs and i got the number of solutions to be 4. But when i came back home and tried to do it on Microsoft Mathematics, i found the results...
  20. G

    Sketch graphs showing vertical & horizontal asymptotes and relative extrema

    Homework Statement Sketch the graphs of the following function showing vertical and horizontal asymptotes and relative extrema: f(x) = (x2-1)/(x2-4) Homework Equations Limits, zeroes, derivatives The Attempt at a Solution I know that I have the majority of the answers right, the...
  21. Saitama

    Recommend books for Graphs of Motion

    Hi, Can someone please suggest me some books on graphs of Motion? Thanks! :smile:
  22. A

    Why do trigonometric graphs with a π don't take inputs in radians/degrees?

    e.g. I want to find y when x is at pi/2 for the graph y=cos pi x. Why does pi/2 have to be expressed as a 'normal' (for want of better word) number (3.14/2) and not as 90 degrees (180/2) like you would for a graph without a pi in it e.g. cos x For cos x, if x is at pi/2, then I just put in...
  23. P

    Exploring Amputated Connected Graphs in QFT

    In Peskin and Schroder Book QFT: They used the term: "amputated connected graphs". Does amputated connected graph in Peskins's book is same as the irreducible graph in common sense? I think it is the same, please reply. thank you all!
  24. A

    How Does a Wave's Graph Change Over Time?

    i just want to double check this is right because i am not given answers. i have a wave traveling at 5cm/s traveling in the positive x direction. when t=0 it has intercepts at 1cm and 4cm. if i have to draw the graph at t=2 will the graph look exactly the same except the intercepts are at...
  25. A

    Acceleration time graphs and velocity time graphs

    i have an acceleration time graph and need to create a velocity time graph. i know to get the velocity you take the area under the acceleration graph but i don't understand how you get the lines. eg. a speed boat accelerates at 2m/s^2 for 7.0 seconds. on the acceleration time graph i...
  26. C

    Creating 3D Graphs in Math Textbooks - Tips & Advice

    Does anyone know which program writers and publishers use to create graphs in textbooks (see attachement for example)? I'm trying to create a basic 3D graph like the one in the attachment, but can't seem to figure it out. To give you an idea, I'm trying to begin by graphing simple circles in a...
  27. K

    What is the equation for my graph and how can I use Eulers formula to help me?

    Homework Statement Since the exercise has a graph I uploded it here :http://imageshack.us/photo/my-images/833/img9845wz.jpg/ fmax(t)=1 T=2Pi h=1,3,5,7,... Also I was told that I could use Eulers formula here. Homework Equations maybe someone could give me some tips how to make the...
  28. T

    Validity of Piecewise Differentiation for Functions with Discontinuities

    [PLAIN]http://img863.imageshack.us/img863/9868/heaviside.png
  29. P

    Understanding 1/f(x) of Graphs with No Equation

    Hi, I have a graph of a function, but it has no specific equation, just a drawing, denoted by f(x). The question asks me to do the 1/f(x) of that graph. What does that mean? Thanks in advance.
  30. P

    Solving Equations Involving Exponentials and Logarithms

    Find the values of a and k if the graph with equation f(x) = ae-kx passes through the points (1, e) and (-1,2e) So, from the information above I managed to derive two equations to solve simultaneously: ae-k = e aek = 2e I am pretty sure those are correct, but I am not 100%. I just...
  31. G

    LaTeX Adding Weights to a Tiks Graph in LaTeX Document

    Does anyone have a way to extend a current graph I have drawn with Tiks in a LaTeX document to include weights. The code I have is this: \begin{center} \begin{tikzpicture} [scale=1,auto,every node/.style={circle,fill=blue!20}] \node (v1) at (2...
  32. A

    How do wood panels resonate, and why do my graphs appear as they do?

    Homework Statement I have this Physics coursework, where I have been investigating how the resonant frequency of wood changes as I increase the length of the wood and the width, by using increasingly long and increasingly wide panels of thin MDF. What I would expect to see would be a decrease...
  33. M

    Learning EKG Graphs: Understand Cardiac Cycles in 1st, 2nd & 3rd Periods

    Hello, I don't know if I'm posting this in the right section because I need help with reading EKG graphs (and I've never had any experience with them), but I'm doing this for my physics lab class. I attached the graph I need help with. So basically, one period on the graph means one...
  34. P

    How Do You Transform the Graph of f(x) = 3x - 2 to g(x) = 6x + 1?

    The function of f is given by f(x) = 3x - 2, where x is part of a set of real numbers. Sketch the graph of f. Find a combination of geometrical transformations of which, when applied to the graph of f will give the graph of g(x) = 6x + 1 At a first glance I thought: Stretch by a scale factor...
  35. J

    Which Graph Paper to Use for Power Relationships: Semi-Log vs Log-Log?

    After collecting data from an experiment and realizing that there is a power relationship, how do u know if u need to use semi log graph paper or log-log paper to graph your data?
  36. S

    Bipartite graphs and isolated vertices

    Homework Statement Hello everyone, I am trying to determine the the threshold function p=p(n) for a random bipartite graph (see http://en.wikipedia.org/wiki/Erd%C5%91s%E2%80%93R%C3%A9nyi_model for a 'random graph': I am interested in the same idea, but for random bipartite graphs), such that...
  37. D

    Probabilistic method for Graphs

    We have been using the probabilistic method in class to show that there exists graphs with very interesting properties. Our most recent assignment would like us to apply the method but I'm having great difficulty in doing so. The question is as follows: We say that a pair of vertices in a...
  38. A

    How to prove that 2 graphs are not isomorphic?

    Hi Well, I know that in some few special cases It is easy to prove that 2 graphs can not be isomorphic. for example if they gave us two graphs that one of them were bipartite and the other were not, we can state that if the 2 graphs were isomorphic, then they would've had same mathematical...
  39. D

    Tangent Planes to Graphs of Functions from Rn->Rm

    1. This is problem 2.10 from the book "Calculus of Several Variables by C.H Edwards": Let the mapping F: R2->R2 be defined by F(x1 , x2) = (sin(x1 - x2), cos(x1 + x2)). Find the linear equations of the tangent plane in R4 to the graph of F at the point (PI/4, PI/4, 0 , 0 ) The attempt...
  40. N

    Directed Graphs: Reflexive, Symmetric, Transitive

    Homework Statement Hello, I want to make sure that I graphed the directed graphs in my homework correctly. The problems and my work is located in the attachment. I also uploaded the directed graphs onto this link: http://img857.imageshack.us/f/83289329.png/" Homework Equations NoneThe Attempt...
  41. C

    Graphs: A Better Way to Memorize Pi Fractions?

    Couldnt we just use whole numbers to graph on the x-axis instead of labeling them pi/2, pi, 3pi/2 ? Because it gets confusing having to memorize which pi fraction goes in order. Is there a better way to memorize these? Thanks
  42. S

    Finding Connected Graphs That Do Not Model a V-Sentence Phi

    how to define a V-sentence phi such that phi has aebitrarily large finite models and for any finite model G , G is a connected graph. after that to find a connected graph that does not model the sentence phi. please explain it to me.
  43. M

    Convert: Accel. vs. Time Graph to Vel. & Pos. vs Time Graphs?

    http://www.bluemelon.com/missj/myfirstalbum#photo-1201004/T800600 So that ^ is the acceleration vs time graph that I'm working with...I have to fill in Velocity vs Time and Position vs Time Tables...and then draw graphs based on both tables...Can someone please make sure that I've gotten the...
  44. J

    Torque & Speed Graphs - What Does No Torque Mean?

    When the motor is producing its top speed, and there is no torque, I cannot picture what this means. I understand that low speeds = high torques, as I can picture an object moving slowly because of its torque. I undersrtand torque as the force that creates rotation, so if a shaft is rotating...
  45. P

    How Accurate Is My Gradient Calculation for Maximum Acceleration?

    For the Scan attachment: The question asks me to find the maximum acceleration. I used those two points in red in the attachment to calculate the gradient doing difference in y and difference in x. I got 4m/s ^2: does it seems correct, or I should have to tangent it? Because it seemed to be a...
  46. K

    Plotting Two time dependant graphs at once

    Basically, we have two functions. P1 and P2. P1 Kicks in at t=0 and runs for a few seconds (a trig function). Then P2 starts, it's and exponential decay. Below is what I'm trying to do. I've tried to create time matrix and even ode solver. I need a way of plotting both functions on a...
  47. H

    How can I use two graphs to approximate g in a lab report?

    Homework Statement I am doing a lab report in which I am supposed to plot 2 graphs from which to approximate g. One is Delta X vs t and one is delta X vs t^2. The data represents the time it takes for an object to travel a certain distance interval (in my case a cart going down an inclined...
  48. K

    Solving Force vs Time Graphs: Velocity Example #37

    Homework Statement I was given this worksheet today: http://www.mrwaynesclass.com/impulse/WS/momentum.pdf However, I was not in school today nor when we started momentum. So I'm a little confused with the graphs. On a force versus time graph, how do you go about solving for velocity? An...
  49. M

    Exploring Graphs of y, y', and y'' in Relation to Anti-Derivatives

    Homework Statement Say y = x^3 Then: y' = 3x^2 y'' = 6x My question is... Let's say I graphed y y' and y''. Do these graphs give us any info about the anti derived graph? For instance just by looking at the y' graph can I gather up any info for y graph?
  50. R

    Solve Directed Graphs Problem 4: Construct Bipartite Graph H

    Problem 4. Let k be an integer and let D be a directed graph with the property that deg+(v) = k = deg-(v) for every v IN V (D). Prove that there exist vertex disjoint directed cycles C1,...Ck so that SUm of V(Ci) = V (D). (HInt: construct a bipartite graph H from D so that each vertex in D...
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